OSX 10.6.6 Auto De-Compressing .tgz files in finder

OSX 10.6.6 seems to be auto de-compressing .tgz files into .tar files whenever I download them, can anyone please tell me how to stop finder from doing this, I would like to preserve the .tgz formatting.

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See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

There is a security feature on iOS devices that is nearly impenetrable when it has been activated. This article will provide some possible solutions as well as necessary steps to take to ensure you do not end up with a locked device.

Users will learn how resize a batch of photos from a single command in Photoshop via Photoshop's Image Processor.
Open up an Image you'd like to resize in Adobe Photoshop:
Adjust the image size according to your preferences. Image > Adjustments > …